// Copyright 2016 The etcd Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package clientv3

import (
	"testing"

	"github.com/stretchr/testify/assert"

	"go.etcd.io/etcd/api/v3/mvccpb"
	"go.etcd.io/etcd/api/v3/v3rpc/rpctypes"
)

func TestEvent(t *testing.T) {
	tests := []struct {
		ev       *Event
		isCreate bool
		isModify bool
	}{{
		ev: &Event{
			Type: EventTypePut,
			Kv: &mvccpb.KeyValue{
				CreateRevision: 3,
				ModRevision:    3,
			},
		},
		isCreate: true,
	}, {
		ev: &Event{
			Type: EventTypePut,
			Kv: &mvccpb.KeyValue{
				CreateRevision: 3,
				ModRevision:    4,
			},
		},
		isModify: true,
	}}
	for i, tt := range tests {
		if tt.isCreate && !tt.ev.IsCreate() {
			t.Errorf("#%d: event should be Create event", i)
		}
		if tt.isModify && !tt.ev.IsModify() {
			t.Errorf("#%d: event should be Modify event", i)
		}
	}
}

func TestShouldRetryWatch(t *testing.T) {
	testCases := []struct {
		name          string
		msg           string
		expectedRetry bool
	}{
		{
			name:          "equal to ErrGRPCInvalidAuthToken",
			msg:           rpctypes.ErrGRPCInvalidAuthToken.Error(),
			expectedRetry: true,
		},
		{
			name:          "equal to ErrGRPCAuthOldRevision",
			msg:           rpctypes.ErrGRPCAuthOldRevision.Error(),
			expectedRetry: true,
		},
		{
			name:          "valid grpc error but not equal to ErrGRPCInvalidAuthToken or ErrGRPCAuthOldRevision",
			msg:           rpctypes.ErrGRPCUserEmpty.Error(),
			expectedRetry: false,
		},
		{
			name:          "invalid grpc error and not equal to ErrGRPCInvalidAuthToken or ErrGRPCAuthOldRevision",
			msg:           "whatever error message",
			expectedRetry: false,
		},
	}

	for _, tc := range testCases {
		tc := tc
		t.Run(tc.name, func(t *testing.T) {
			assert.Equal(t, tc.expectedRetry, shouldRetryWatch(tc.msg))
		})
	}
}
